Hardware RAID using three disks Post: 302931588

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Operating Systems Solaris Hardware RAID using three disks Post 302931588 by jegaraman on Wednesday 14th of January 2015 02:58:45 AM

01-14-2015

Registered User

Hardware RAID using three disks

Dear All ,

Pl find the below command ,

Code:

# raidctl -l
Controller: 1
        Volume:c1t0d0
        Disk: 0.0.0
        Disk: 0.1.0
        Disk: 0.3.0
# 
 raidctl -l c1t0d0
Volume                  Size    Stripe  Status   Cache  RAID
        Sub                     Size                    Level
                Disk
----------------------------------------------------------------
c1t0d0                  136.6G  N/A     OPTIMAL  OFF    RAID1
                0.0.0   136.6G          GOOD
                0.1.0   136.6G          GOOD
#

 format
Searching for disks...done


AVAILABLE DISK SELECTIONS:
       0. c1t0d0 <LSILOGIC-LogicalVolume-3000 cyl 65533 alt 2 hd 16 sec 273>
          /pci@0/pci@0/pci@2/scsi@0/sd@0,0
       1. c1t3d0 <SUN600G cyl 64986 alt 2 hd 27 sec 668>
          /pci@0/pci@0/pci@2/scsi@0/sd@3,0
Specify disk (enter its number): ^D

In the above output , i want to know how this RAID 1 volume has been created , whether it is created of two disks or three disks as because i find in "raidctl -l " command there are three disks present .

And also i want to do the patching on this server , any one tell me how to split this raid 1 volume and do the activity.

Rgds
Mj

jegaraman

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LEARN ABOUT NETBSD

mpii

MPII(4) 						   BSD Kernel Interfaces Manual 						   MPII(4)

NAME

     mpii -- LSI Logic Fusion-MPT Message Passing Interface II

SYNOPSIS

     mpii* at pci? dev ? function ?

DESCRIPTION

     The mpii driver provides support for storage controllers using the LSI Logic Fusion-MPT Message Passing Interface II family of chipsets:

	   -   LSISAS2004, LSISAS2008

     These chipsets can be found on the following controllers:

	   -   Dell PERC H200
	   -   LSI SAS 9200-8e, SAS 9211-4i, SAS 9211-8i

     Some models of these controllers have varying degrees of support for RAID 0 and RAID 1.

     mpii supports monitoring of the logical disks in the controller through the bioctl(8) and envstat(8) commands.

EVENTS

     The mpii driver is able to send events to powerd(8) if a logical drive in the controller is not online.  The state-changed event will be sent
     to the /etc/powerd/scripts/sensor_drive script when such condition happens.

SEE ALSO

     intro(4), pci(4), scsi(4), sd(4), bioctl(8), envstat(8), powerd(8)

HISTORY

     The mpii driver first appeared in OpenBSD 4.7.

AUTHORS

     The mpii driver was written by James Giannoules and Mike Belopuhov.

BUGS

     The chips supported by mpii do not use a SCSI-like identifier.  Instead they use an opaque ID and leave discovery order up to the operating
     system.  The code to handle this is currently not implemented and therefore it is not a good idea to run this driver on a multi-boot machine
     or with more than 1 drive.

BSD
								  April 19, 2012							       BSD